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| 18. |  | ALHO, C. J. R.; RONDON, N. L. Habitats, population densities, and social structure of capybaras (Hydrochaeris hydrochaeris, Rodentia) in Pantanal, Brazil. Revista Brasileira de Zoologia, São Paulo, v. 4, n. 2, p. 139-149, 1987.| Biblioteca(s): Embrapa Amapá. |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
23/01/2016 |
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Data da última atualização: |
03/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
AUAD, A. M.; SILVA, S. E. B.; SANTOS, J. C.; VIEIRA, T. M. |
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Afiliação: |
ALEXANDER MACHADO AUAD, CNPGL; Sandra E. B. Silva; Juliana C. Santos; Tamiris M. Vieira. |
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Título: |
Impact of fluctuating and constant temperatures on key life history parameters of Sipha flava (Hemiptera: Aphididae). |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Florida Entomologist, v. 98, n. 2, p. 424-429, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to evaluate the impact of constant and fluctuating temperatures on the biology of Sipha flava (Forbes) (Hemiptera: Aphididae) in order to determine whether the results of laboratory studies can be extrapolated to those performed in natural conditions. We compared the biological parameters of S. flava kept in an uncontrolled greenhouse in which temperatures fluctuated (treatment 1) with those kept in a phytotron-type climate chamber that simulated the mean hourly average temperatures of the greenhouse (treatment 2). In addition, we compared the effects of treatment 2 versus the effects of having a set temperature during photophase and another set temperature during scotophase versus a constant daily average temperature. The experimental design was completely random, and 150 nymphs were used per treatment at the outset of the biossays. However, the number of repetitions was altered in relation to survival of the aphids in the different instars and treatments. By daily use of a stereoscopic microscope, we evaluated the following parameters: the duration (days) and survival (%) of each instar and stage as well as the reproductive capacity (offspring per female per day) and the longevity (days) of adults. The simulation of mean hourly temperatures of an uncontrolled greenhouse favored the survival, reproductive capacity, and longevity of adults ? which are factors of great importance in the insect population growth ? compared with those insects kept at 27 °C (photophase) and 18 °C (scotophase) or kept at the constant daily average temperature. The results showed that much caution must be exercised in extrapolating results obtained in the laboratory under constant temperatures to predict the population dynamics of field populations of S. flava. MenosThis study aimed to evaluate the impact of constant and fluctuating temperatures on the biology of Sipha flava (Forbes) (Hemiptera: Aphididae) in order to determine whether the results of laboratory studies can be extrapolated to those performed in natural conditions. We compared the biological parameters of S. flava kept in an uncontrolled greenhouse in which temperatures fluctuated (treatment 1) with those kept in a phytotron-type climate chamber that simulated the mean hourly average temperatures of the greenhouse (treatment 2). In addition, we compared the effects of treatment 2 versus the effects of having a set temperature during photophase and another set temperature during scotophase versus a constant daily average temperature. The experimental design was completely random, and 150 nymphs were used per treatment at the outset of the biossays. However, the number of repetitions was altered in relation to survival of the aphids in the different instars and treatments. By daily use of a stereoscopic microscope, we evaluated the following parameters: the duration (days) and survival (%) of each instar and stage as well as the reproductive capacity (offspring per female per day) and the longevity (days) of adults. The simulation of mean hourly temperatures of an uncontrolled greenhouse favored the survival, reproductive capacity, and longevity of adults ? which are factors of great importance in the insect population growth ? compared with those insects kept at 27 °C (pho... Mostrar Tudo |
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Palavras-Chave: |
Aphid; Insect. |
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Thesaurus NAL: |
forage. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/137565/1/Cnpgl-2015-FloridaEnt-Impact.pdf
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Marc: |
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100 1 $aAUAD, A. M.
245 $aImpact of fluctuating and constant temperatures on key life history parameters of Sipha flava (Hemiptera$bAphididae).$h[electronic resource]
260 $c2015
520 $aThis study aimed to evaluate the impact of constant and fluctuating temperatures on the biology of Sipha flava (Forbes) (Hemiptera: Aphididae) in order to determine whether the results of laboratory studies can be extrapolated to those performed in natural conditions. We compared the biological parameters of S. flava kept in an uncontrolled greenhouse in which temperatures fluctuated (treatment 1) with those kept in a phytotron-type climate chamber that simulated the mean hourly average temperatures of the greenhouse (treatment 2). In addition, we compared the effects of treatment 2 versus the effects of having a set temperature during photophase and another set temperature during scotophase versus a constant daily average temperature. The experimental design was completely random, and 150 nymphs were used per treatment at the outset of the biossays. However, the number of repetitions was altered in relation to survival of the aphids in the different instars and treatments. By daily use of a stereoscopic microscope, we evaluated the following parameters: the duration (days) and survival (%) of each instar and stage as well as the reproductive capacity (offspring per female per day) and the longevity (days) of adults. The simulation of mean hourly temperatures of an uncontrolled greenhouse favored the survival, reproductive capacity, and longevity of adults ? which are factors of great importance in the insect population growth ? compared with those insects kept at 27 °C (photophase) and 18 °C (scotophase) or kept at the constant daily average temperature. The results showed that much caution must be exercised in extrapolating results obtained in the laboratory under constant temperatures to predict the population dynamics of field populations of S. flava.
650 $aforage
653 $aAphid
653 $aInsect
700 1 $aSILVA, S. E. B.
700 1 $aSANTOS, J. C.
700 1 $aVIEIRA, T. M.
773 $tFlorida Entomologist$gv. 98, n. 2, p. 424-429, 2015.
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Embrapa Gado de Leite (CNPGL) |
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